int main()
{
    char* A="abcde";
    printf("%d ",*A=='a');

    int B[]={1,2,3};
    int* C=B;
    printf("%d ",C[2]);

    printf("\n+++++\n");
    char c=1;
    int i;
    for(i=0;i<16;i++)
    {
        printf("%d\n",c);
        c=c<<1;
    }
}
